Casement window



Nov. `3, 1925. 1,559,544

c. s. Bock 1 CASEHENT WINDOW Find Nov. 21, 1925 2 sheets-sheet 1 fgfj d5 i?! l 'f l 'L-o l Y e 1 om Z 1 1 Z ian a 1111111111111111 1 v6 J6 V6 lf- -j I -ZZ 111111111111111111111111111111111111111111111 111111111111111111111111111111111111111I ,l Y 01 Nav. 3, 1925.

C. S. BOCK GASEMENT wINDow Filed Nov. 2,1. 1923 2 Sheets-Sheet 2 preciated upon a fulljv comprehension Patented Nov. 3,' 192.5.

- UNITED sTATEs l 1,559,544 PATENT oFFlcE.

VCHARLES s. Boex. or fcnicAGo, iLL'INoIs, AssIeNoa-v fro ANDREW HOFFMAN MFG.

oo., or CHICAGO, ILLiNois, A eoarorm'iloiv or .TLLINo-Is. I f

CASEMENT WINDOW.

To all 'whom t may concer/n,.- j

Be it known that I, CHARLES S. Boex, a citizen of thenited States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Casement VVindOws, of which the following is a specification. The invention relates to easement windows, and vis concerned particularly with that class of easement windows wherein the sashes are capable of both swinging and sliding movement in the frames. v p

One object vof the invention is to provide, in a easement windowjof thecharacter described, a light durable construction. especially suitable for fabrication in metal.

Another object is to provide, in suchya' window, a thoroughly weather-proof arrangement requiring no auxiliary fweather stripping under even the most adverse conditions of use.y y

Still another object is to provide, in such a window, a highly efficient manner of operation serving to eect a snug springpressed closure. l v

'While the foregoing statements are indicative in a general way of the nature of the invention, other Objectsand advantages not herein specifically referred to will be -ap- .of the novel features presented in. the construction, arrangement and manner of operation of the vCasement window.

In order that the invention may be readily understood, one embodiment of the same is set forth in the accompanying drawings and in the following detailed description. based thereon. Obviously the invention is susceptible of embodiment in other and varied constructional forms without departure from the; essence of the invention or sacrifice.

of its material advantages; wherefore -it is to be understood that the drawings and description are to be consideredin an Aillustrative yand not in lany unnecessarily limiting In the drawings, I l 1 Fig. 1 is a front elevation of the easement window;

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1;

Fig. 3 is also a horizontal section 'taken- 'on the line 2-\2 of Fig. 1, but Aillustrates the sashes in ay partially open position;

Fig. 4 is also ahorzontal section on ythe of the flanges.

Application fl'edNovember 21, 1923. Serial No. 675,992.

line 2-2 of'Fig.- 1, but illustrates thesashes V in another partially open position;

Fig. 5 isa vert-ical section taken on the line 5-5 of Fig.1; v

. Fig. 6 is a horizontal section taken onthe line 6 6 of Fig. 1;

` Fig. 7 is a horizontal section taken on the line 7 7 of Fig. 1; 1 l

Fig. 8 is a perspective vi upper mo-unting fixtures; and

Fig. 9 isla perspective view of one of the i* lower mounting fixtures.

` The easement window illustrated in the drawings comprises a frame 10, two sashes 11 and 12 andmeans 13 for movably'gmounting the sashes in the frame.

ewl of one lof the The frame includesy a rectangular sheathing 14, an outwardly extending flange along the top, sides and botto-m ofthe front periphery of the sheathing, an inwardly exl tending flange 16 along the sides' of the front periphery of the sheathing, and an inwardly extending flange 17 along the top and sides of the rear periphery. of the sheathing.

The two sashes 11 and 12 are hinged together at 1S in such a way as to permit arrangement of the same either in a coplanar 'position'in the general plane ofthe frame or in an angular position of more or less Vdegree infrontof the frame.' ','The sashes `are provided, about the front peripheries lof the same, with outwardly extending flanges 19 for contiguously overlapping the flanges and16'of the frame,"and, about the rear peripheries of the same with unflanged edges 20`for perpen'dicularly abutting against the flanges 17 of the frame and afsill plate 21 just above'the bottom of the frame.. The portions of the flanges V 19 along vthe hingedledges lof the sashes approximately abuttogether, and one ofthe,v

`flange portions is provided with a lap strip 22; and the corresponding lrearwardly disfposed portions of the unflanged edgesr20 are provided with flanges 28 which approximately abut together 'and are klikewise spanned by a lap The leaves of the hinges 18 are preferably secured to the flanges 23.

The construction and the interfitting relationshipof the frame 10 and the two sashes 11 and 12 constitute a very desirable weathyer-proof association of the parts which is .characterized by double front and rearr conn strip 24 provided'on one ed fonspaced spindles `carried on the upper surface of the portions 80, flativertically disposedport-ions. v 32 extending downwardly from different ends of the portions 30,`A and lateral yextensions 33 on the portions 82 for forming, in` conjunction withpthe portions 32,v resi-lien'tlyfiexiblef hinge leaves 34: for pivotal association i with swinging Y hinge leaves adapted for `attachmentK to the upper portionsfof the otherwise unhinged sides ofthesashes-lland 12. f

The guide 27ffor.theixtures 26 comprises an inverted channel' member which is lixedly positioned yalong :the: under surface 'o-f' the topL ofithe.frame-10. .g The 'channel member has-an-` inside-width slightly great-er than the diameters ofthe-gniderollers 31andv is provided. ailongafits edges with inwardly turned fian'gesa` for supporting v`engagement n with-,the V under l surfaces of they guide rollers 31.

Then two'k low-er ffixtures 28:V are, in both construetiom andy function, somewhat similarto theupper ffixtures-26f The lower vfix- .tures'include flat horizontally "disposed portionsffsliding sho'es88 mounted for movement upwardly jor' downwardly lin .continued parallelism with the portions? onpositioningstuds I39.-,-flatvertically disposed. portionsy l0y extending-.upwardly from .different ends'. of theaportions y37, and laterall ,extensionsfftal.I onthe portions :410.forforming, in conjunction withthe fportions 40; resiliently flexibler; hinge leaves 42.y for `vpivotal associa.- tioirwith -gswingingshingeleaves 61:3 adapted for-attachment to the` lower. portions ofthe sides-ofthe sashes 1-1and..12 yat .points directly below. the vfixtures 2.6.

The guide 29. for-the' fixtures 28 comprises anA angle bar which is, fixedly positioned along fthe upper ysurface of the bottom 'of thefframe 10.. One flangeof the angle bar extends in a verticalplane andforms a narrowblade44 `for cor-action with slots 45 inthe slidin-gshoesv .38 ofthe xture's 28."

It lwill be understood, fromf'the foregoing:detaileddescriptionl of the' various parts ofthe'casement window assembly, thatfwhen A cthe-fceil'tna-llyv disposed' hingedfsides ofthe i es sashesgyare.. A ovedi forwardly'; thelaterally disposed ffreer.sides?,ofithesame will approach each vother" in' the "general plane fof the In opening, or closing the sashes,f the hingesi18 connectingthe sashes passthrou-gh the planefof thelhinge pivots of thextures when the sashes are ,disposed at an angleof approximately ten i degrees to the general plane; of theframe, as shown in F ig. 8,loe. cause ofthe front offsetting of the `hinge pivots of the fixtures.y The distance between the hinge pivots of theiixturesr is accordingly lessthan-the combined distances between each ofthe hinge pivots ofthe fixturesand Y the hinges 18 forall positions of the sashes except that partially `open position wherein the hinge pivots o-f thefxtures are resiliently sprung apart while the hinges 18 are temporarily in the plane of the hingefpiv'- ots. The fixtures are so mounted ronvthe sashes that they will reach-the ends of their travel in opposite directions just before the hin-ges 18 on the sashes pass through the plane of thehinge pivots of the fixtures during; the closing of the sashes'.'y As a conse'- quenceT when the sashesare moved through thisdead-center position5 the hinges leaves 34 and 4t2 of the-upperand..lower fixtures are causedtofiex resili'entlywhereby to vspread thehinge pivots ofA thelixtures a sufii'cient distance topermi't the'hinges 18 to pass'into and through the plane of the hinge pivots of. theffixtnres, and,v as soon; as .the sashes are past thisfdead-center position, .the sashes wilhspring automatically into a tightly closed position underthe. continuing tension of the-'hinge leaves'. v. This feature of the inventionfinsures a snugly, closed position' of the sasheswhen the'V sashes .are moved into an'f approximately closed. .position and also serves to ymaintain the sashesiny the partially open position shown'in'Fig. 3 when such position is; desired,; since the sashes, when moved into'proximity to the'dead-center position, tend 'to spring either forwardly into a more open position or rearwardly intothe closed position-the direction of suchtendencyg'of course, depending upon the-position of the sashes relative to the dead-center position; i

The features of the invention".V which com'- bine tozprodriceftheigadvantageous* manner "of Operation above described are the-hinged connection' between'i.y the;n adjacent edgesof A Cil pivots of the fixtures in a plane which is in front of the intermediate hinge pivot connecting the sashes when thesashes are in the closed position, the slight resilient flexibility of the portions supporting the hinge pivots of the fixtures, and an absence of any fixed abutments which would prohibit flexing of the portions supporting the hinge pivots-in the most separated position of the fixtures'.

The fixtures, it will be appreciated, do not require in their application specially constructed sashes, but are universal in that they may be attached without modification to any of the sashes now in general use.

I claim:

1. In a easement window, a frame, two pivotally connected sashes abuttable laterally with portions of the frame upon being swung into a common plane to close the opening in the frame, and a plurality of fixtures having portions associated with the frame for sliding movement of the fixtures in substantially fixed relation to a plane of the frame and portions associated with the sashes for swinging movementof the sashes about pivotal axes on the fixtures, the said pivotal axes on the fixtures being separable under spring reaction duringvthe closing of the sashes to positions beyond those occupied by such axes when the sashes are closed,

` whereby to exert a pressure on the sashes when closed tending to maintain the same in closed position. i

2. In a. easement window, a frame, two pivotally connected sashes, having flanges about the front margins thereof which lap contiguously with portions of the vertical and horizontal members of the frame when the sashes are closed to afford a weather proof closure, and a plurality of fixtures having portions associated with the frame for sliding movement of the fixtures in substantially fixed relation to a plane of the frame and portions associated with the sashes for swinging movement of the sashes about piv'otal axes on the fixtures which are located in aplane in front of the flanges of the sashes whenthe sashes are closed.

3. In a. Casement window, a frame, two pivotally connected sashes, and a plurality of fixtures having portions associated with the frame for sliding movement of the fixtures in substantially fixed relation to a plane of the frame and resiliently flexible portions associated with the sashes for swinging movement of the sashes about pivotal axes on the fixtures.

4.'In a easement window, a frame, two pivotally connected sashes, and a pluralityv of integral L-shaped fixtures having horizontally extending portions associated withL the frame for sliding movement of the fixtures in substantially fixed relation to a plane of the frame and resilientlyflexible vertically'extending portions associated with the sashes for swinging movement of the sashes about pivotal axes on the fixtures.

5. In a easement window, a frame having horizontally extending guide members adjacent its top and bottom, two pivotally connected sashes, and a plurality of integral L-shaped fixtures having horizontally extending portions in engagement with the4 sashes for swinging movement of the sashesV about pivotal axes on the fixtures which are located in a plane offset from the location of the pivotal axis connecting the sashes when the sashes are closed.

6. In a easement window, a metal frame having a flange about its front face, two pivotally connected metal sashes having outwardly extending flanges about ltheir front faces adapted to overlap contiguously the flange of the frame when the sashes are closed, and a plurality of fixtures having horizontally extending portions associated with the framefor sliding movement of the fixtures in substantially fixed relation to a plane of the frame and resiliently flexible vertically extending portionsassociated with the sashes for swinging movement of the sashes about pivotal axes on the fixtures.

7. As an article of manufacture, a sash fixture having a horizontally extending portion adapted to slide along aguide member` in substantially fixed relation to the member and a resiliently flexible portion adapted to pivot a swinging member.

8. As an article of manufacture, an integral L-shaped sash fixture havingk a. horizontally extending portion, spaced bearing rollers carried bythe horizontally extend ing portion for coaction with a guide member, a resiliently yieldable vertically extending -portion at'one Aend of the horizontally extending portion, and a hinge pivot along one side of the vertically extendingportion. In witness whereof I have hereunto signed my name.

CHARLES S. BOCK. 

